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#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;

vector<int>vctr;

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	
	int n, k, res = 0, a;
	
	cin >> n >> k;
	
	for(int i=0; i<n; i++){
		cin >> a;
		vctr.push_back(a);
	}
	
	sort(vctr.begin(), vctr.end());
	reverse(vctr.begin(), vctr.end());
	
	res = k;
	
	while(res < vctr.size() && vctr[res] == vctr[res-1]) res++;
	
	cout << res;
	
	return 0;
}